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<div>Rectangle:</div>
<div>$$ \begin{align}
    LENGTH &= 19cm \\
    WIDTH &= 18cm\\
    AREA &= 19 \times 18 = 342cm^2
    \end{align} $$</div>
<div>Square:</div>
<div>$$ \begin{align}
    SIDE &= 16cm\\
    AREA &= 16 \times 16 = 256cm^2
    \end{align} $$</div>
<div>Add together the areas:</div>
<div>$$ AREA = 342 + 100 = 598cm^2 $$</div>
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